installing rb19 gems fails

[singingwolfboy@…]

Every gem that I've tried to install for Ruby 1.9 has failed with the following stack trace:

/opt/local/lib/ruby1.9/site_ruby/1.9.1/rubygems/source_index.rb:68:in `installed_spec_directories': undefined method `path' for Gem:Module (NoMethodError)
	from /opt/local/lib/ruby1.9/site_ruby/1.9.1/rubygems/source_index.rb:58:in `from_installed_gems'
	from /opt/local/lib/ruby1.9/site_ruby/1.9.1/rubygems.rb:881:in `source_index'
	from /opt/local/lib/ruby1.9/site_ruby/1.9.1/rubygems/gem_path_searcher.rb:81:in `init_gemspecs'
	from /opt/local/lib/ruby1.9/site_ruby/1.9.1/rubygems/gem_path_searcher.rb:13:in `initialize'
	from /opt/local/lib/ruby1.9/site_ruby/1.9.1/rubygems.rb:839:in `new'
	from /opt/local/lib/ruby1.9/site_ruby/1.9.1/rubygems.rb:839:in `block in searcher'
	from <internal:prelude>:10:in `synchronize'
	from /opt/local/lib/ruby1.9/site_ruby/1.9.1/rubygems.rb:838:in `searcher'
	from /opt/local/lib/ruby1.9/site_ruby/1.9.1/rubygems.rb:478:in `find_files'
	from /opt/local/lib/ruby1.9/site_ruby/1.9.1/rubygems.rb:1103:in `<top (required)>'
	from <internal:lib/rubygems/custom_require>:29:in `require'
	from <internal:lib/rubygems/custom_require>:29:in `require'
	from /opt/local/bin/gem1.9:8:in `<main>'

Interesting that it's using the 1.9.1 directory:

masika:ports baumgold$ ruby1.9 --version
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10]

[kimuraw@…]

It seems the another rubygems is installed in your system.

ruby-1.9.2 built-in rubygems:
  ${prefix}/lib/ruby1.9/1.9.1/
      rubygems.rb
      rubygems/

rubygems form other installation:
  ${prefix}/lib/ruby1.9/site_ruby/
      rubygems.rb
      rubygems/

The latter files are not needed for ruby-1.9.2 system. I think to delete rubygems files under the site_ruby directory solves your problem.

[kimuraw@…]

see ​http://www.ruby-forum.com/topic/215219#934439

[kimuraw@…]

I'll close this ticket. You can reopen this ticket if your problem is not solved.